From:	johne AT parallax DOT co DOT uk (John Eccleston)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Help! Random is not working right
Date:	Tue, 08 Apr 97 07:25:24 GMT
Organization:	Parallax Solutions Ltd
Message-ID:	<860484279.79294@red.parallax.co.uk>
References:	<3349B612 DOT 68C AT ucsu DOT Colorado DOT edu>
NNTP-Posting-Host:	red.parallax.co.uk
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To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

In article <3349B612 DOT 68C AT ucsu DOT Colorado DOT edu>, heymann AT ucsu DOT Colorado DOT edu wrote:
>I am having a major problem with my program. The random fuction does not
>seem to be working right.
>
[SNIP]

Hi,

Rather than using the AND operator use the MODULUS operatorinstead, so

   random() & 9

becomes

   random() % 10

This will return values between 0 and 9.

Using the AND operator as you have done simply returns the bits set
in the value returned by random and those set in 9 ie (1001),  which
is why you only see the extremes of your value range.

Hope that helps

John

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